Anyone off hand know what the rate of twist is on a 72 73 B serial ran.ge 99a 243 ........Guy is shooting 100 gr and at 50 yrds the bullets are sideways hitting the paper ..... He used a cleaning stick method with tight patch and says he's measuring 1 in 8 ..... any help would be appreciated
He is handloading ,,,just found out a 243 bullet down the throat falls out the muzzle freely ..............Someone has rebarreled and didnt mark the barrel ,,,,,His brass had small cracks on the end also YIKES
He is handloading ,,,just found out a 243 bullet down the throat falls out the muzzle freely ..............Someone has rebarreled and didnt mark the barrel ,,,,,His brass had small cracks on the end also YIKES
NOTE TO SELF, always take a chamber cast of an unmarked barrel, since any 'smith worth a damn would have stamped the cartridge it was chambered for somewhere on the barrel.
Thing is ,,hes a couple hundred miles from me ......and the kicker ,,he took it to a smith to look it over before he shot it ,,,,
Misquote ....the barrel is marked ,,rebored not rebarreled .......
So, somebody rebored the barrel from 243 to ??? and didn't bother to either mill or X out the original chambering/caliber? If so, that seems like poor, unprofessional, work to me. I've had several barrels rebored and the reboring vendor always either milled or X'd out the original stamps and restamped the barrel with the current/correct cartridge that the barrel was chambered for.
Measure the width at the front of the case to figure out the new caliber.
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Maybe if ya shove a 358 Winchester cartridge in there and touch it off you could capture the resized bullet with all the rest of the pieces of the rifle as they rain down all over the yard.
Measure it with a mic and there ya go.
_______________________________________________________ An 8 dollar driveway boy living in a T-111 shack
If I was your friend, I'd be annoyed, to say the least, at the person who sold him that rifle. Selling a rifle like that, seems like it could be a significant liability issue for whoever did the rebore work and whoever sold the rifle to your friend.
I'd slug the barrel, determine what cartridge it is actually chambered for, and go forward from there. The 25 Souper, 260, and 7mm-08 are great hunting cartridges, so I wouldn't give up on it quite yet.
Another option would be to buy a take-off barrel from one of the auction sites or maybe even via eBay.
My gunsmith friend tells me it is a federal law that a rifle be marked as to chambering. Not doing so would be a federal crime. Have a chamber cast done. For a quick answer, mike the bore at the muzzle or, as suggested above, mike a fire case neck and subtract 25/1,000".
My gunsmith friend tells me it is a federal law that a rifle be marked as to chambering. Not doing so would be a federal crime. Have a chamber cast done. For a quick answer, mike the bore at the muzzle or, as suggested above, mike a fire case neck and subtract 25/1,000".
Most military rifles that I've owned weren't marked as to the chambering.
He;s in the process of slugging,,,, He fireformed a case ,,,,Its looking like a 260 rem Found out the old fellow that owned it passed away and his daughter sold his things off ,,,So makes since she wouldnt know what was up with the rebore
